These two fonts also differ from the Heisei “Std” fonts in that they include significantly more glyphs. The Heisei fonts were developed by a consortium of companies, and Adobe is one of the member companies. Interestingly, JIS X 0213:2004 glyph data was developed only for Heisei Mincho W3 and Heisei Kaku Gothic W5, and JIS X 0212-1990 glyph data was developed only for the former font. So, one of my projects last year was to map as many of these glyphs as possible to Adobe-Japan1-6 CIDs.
I was able to add 8,086 glyphs to Heisei Mincho W3, bringing the number of glyphs in the “StdN” version to 17,440. Similarly, I was able to add 4,655 glyphs to Heisei Kaku Gothic W5, bringing the number of glyphs in the “StdN” version to 14,009 glyphs.

In addition, the proportional Latin glyphs were changed in both fonts. Those for Heisei Mincho StdN W3 come from Kozuka Mincho Pr6N L (小塚明朝 Pr6N L), and those for Heisei Kaku Gothic StdN W5 come from Kozuka Gothic Pr6N M (小塚ゴシック Pr6N M). As a result, when comparing these “StdN” fonts with their “Std” (pure Adobe-Japan1-3) counterparts, the glyphs for the following 462 CIDs have been changed: 1–230, 740, 8270, and 8720–8949.

Lastly, for those who have a strong desire to know which specific Adobe-Japan1-6 CIDs are included in these fonts, they are listed below: